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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2012
Schedule of Computation of Basic and Diluted Earnings Per Share | The computation of basic and diluted earnings per share is as follows:
|  | Years Ended December 31, |
|  | 2012 |  |  | 2011 |  |  | 2010 |
($ in thousands, except per share amounts) |  |  |  |  |  |  |  |  |
Net Income |  | $ | 37,773 |  |  | $ | 145,420 |  |  | $ | 9,642 |
Noncontrolling interests |  |  | (101 | ) |  |  | — |  |  |  | — |
Preferred stockholder dividends |  |  | — |  |  |  | (9,482 | ) |  |  | (3,289 | )
Allocation of earnings to preferred stockholders |  |  | (64 | ) |  |  | (24,260 | ) |  |  | (1,144 | )
Net Income Attributable to Common Stockholders |  | $ | 37,608 |  |  | $ | 111,678 |  |  | $ | 5,209 |
Shares: |  |  |  |  |  |  |  |  |  |  |  |
Basic: Weighted-average number of shares outstanding |  |  | 7,727 |  |  |  | 6,211 |  |  |  | 6,014 |
Plus: Incremental shares from assumed conversion of dilutive instruments |  |  | 346 |  |  |  | 623 |  |  |  | 423 |
Diluted: Weighted-average number of shares outstanding |  |  | 8,073 |  |  |  | 6,834 |  |  |  | 6,437 |
Earnings (loss) per share—basic |  | $ | 4.87 |  |  | $ | 17.98 |  |  | $ | 0.87 |
Earnings (loss) per share—diluted |  | $ | 4.66 |  |  | $ | 16.34 |  |  | $ | 0.81 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + References No definition available. + Details
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